18
Step-by-step explanation:
Step 1:
Given,
Choices available in the type of vehicle = Sedan , SUV or pick up truck
Choices available in vehicle manufacturer type = import or domestic
Choices available in color = black, white or silver
Step 2:
Hence we have
Number of choices available in the type of vehicle = 3
Number of choices available in vehicle manufacturer type =2
Number of choices available in color = 3
So the total number of ways in which Marissa can select her new vehicle can be obtained by taking the product of choices in each category 3*2*3 = 18